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SigmasTek  |  SKU: BW-10691

BCI Group Size 27 High Performance Replacement Battery

Sale price $250.94 USD Regular price $328.56
Shipping calculated at checkout.

➤ Brand new, factory fresh for reliable performance

➤ Absorbent Glass Mat (AGM) technology for enhanced durability

➤ Maintenance-free and spill-proof design for easy use

➤ U.L. recognized and CE certified for safety assurance

➤ Compatible with BCI Group Size 27 models, backed by 1-year warranty


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 100 Ah

Terminal Type

Nut & Bolt

SigmasTek 12V 100Ah BCI Group Size 27 SLA Battery with NB (Nut & Bolt) Terminal

This brand new SigmasTek BCI Group Size 27 replacement battery is a powerful, long-lasting energy solution engineered for applications that require robust capacity and dependable performance. With a 12 Volt, 100 Ah rating and NB (Nut & Bolt) terminal configuration, this sealed lead acid (SLA) battery provides the heavy-duty runtime and durability needed for sustained operation. We guarantee full compatibility with BCI Group Size 27 installations, offering a high-performance battery option for demanding backup and primary power systems.

Key Specifications

  • Brand: SigmasTek
  • Battery Group: BCI Group Size 27
  • Battery Type: Rechargeable Sealed Lead Acid (SLA) battery
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 100 Ah
  • Terminal Type: NB (Nut & Bolt)
  • Design: Maintenance-Free with Spill Proof Construction
  • Safety: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility Claim: Guaranteed 100% compatibility with BCI Group Size 27 model

Benefits

This SigmasTek BCI Group Size 27 battery delivers exceptional durability and long life suited for heavy-duty duties. The AGM construction provides enhanced vibration resistance and leak protection, while the maintenance-free design eliminates the need for routine electrolyte checks. As a high-performance battery with a substantial 100 Ah capacity, it supports longer runtimes and is ideal for sustained loads, frequent cycling, or critical standby systems.

Typical applications include use in uninterruptible power supplies (UPS), emergency backup systems, telecommunications, solar energy storage, large mobility devices, and heavy-duty tools or equipment requiring extended runtime. The NB (Nut & Bolt) terminal ensures secure connections for high-current applications, minimizing voltage drops and connection issues under load.

The U.L. recognition and CE certification provide added assurance of safety and conformity to recognized standards, making this long-lasting battery a reliable choice for demanding installations. The 1 Year Warranty and factory-fresh condition offer protection and peace of mind for installers and equipment managers.

Ready to upgrade to a powerful, long-lasting battery for your BCI Group Size 27 application? Purchase this SigmasTek 12V 100Ah high-performance replacement battery now to ensure reliable power and extended runtime.


Payment & Security

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